Peter Knapper wrote in a message to Roy J. Tellason:

 PK> As an aside to this, what this really means is that it is 
 PK> POSSIBLE to load IBM OS/2 TCP/IP against a network card twice, 
 PK> but using different LEVEL numbers. You could then configure 
 PK> different TCP/IP address ranges on the same card, 1 for each 
 PK> TCP/IP PROTOCOL driver loaded. The bottom line is that you 
 PK> could then have 1 OS/2 PC appearing in 2 distinct TCP/IP 
 PK> Networks on the same LAN segment. 

Nifty...

 PK> You could then use this to install a Firewall on the OS/2 box 
 PK> between those segments without having a seperate physical LAN 
 PK> in place, however the benefits of doing this are moot 
 PK> considerng the low cost of Ethernet cards these days... 

Yeah.  I didn't know that there was firewall software available for OS/2.  It
seems to be something do-able easily enough (he says,  not having tried to do
it yet :-) under Linux...

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